Medium Voltage ESCO Style Switches - Powell Industries, Inc.

<strong>Medium</strong> <strong>Voltage</strong> <strong>ESCO</strong> <strong>Style</strong> <strong>Switches</strong><br />

CUSTOM MV SWITCHES TO ISOLATE, DISCONNECT, TRANSFER, AND SECTIONALIZE<br />

Proven design and experience<br />

Rugged construction<br />

Custom-engineered to your<br />

requirements<br />

High quality and long life<br />

Sealed and welded tank design<br />

Loadbreak, transfer, and speed<br />

changing configurations<br />

Your choice of insulating media<br />

MV <strong>ESCO</strong> STYLE SWITCHES<br />

<strong>Powell</strong> MV <strong>ESCO</strong> <strong>Style</strong> <strong>Switches</strong> have been an industry<br />

leader with proven designs in service for more than<br />

40 years. They are engineered and built with a high<br />

degree of quality that delivers switching requirements<br />

beyond those of the normal life cycle of most medium<br />

voltage switches. <strong>Powell</strong> MV <strong>ESCO</strong> <strong>Style</strong> switches<br />

are ideally suited for applications where the user<br />

needs to isolate, disconnect, transfer, or sectionalize<br />

medium voltage distribution systems and equipment.<br />

The rugged design allows for installation indoors,<br />

outdoors, in underground vaults subject to flooding,<br />

or mounted on power transformers.<br />

LOADBREAK<br />

<strong>Powell</strong> loadbreak switch designs incorporate a<br />

unitized switch assembly surrounded with an<br />

insulating medium that can be either Oil or SF 6 Gas.<br />

Designs are available through 38kV and 600A for both<br />

oil and SF 6 designs. These have been in service for<br />

more than 30 years and have a proven track record for<br />

dependability.<br />

TRANSFER<br />

Cost effective transfer switch designs for your<br />

AC distribution system can be tailored to fit your<br />

exact needs. <strong>Powell</strong> transfer switches are available<br />

in a variety of arrangements, with our patented<br />

ArcWhipper mechanism or vacuum interrupters for<br />

the source side, and with or without fault protection<br />

on the load side. This unique flexibility provides you<br />

with an array of size and system protection options so<br />

that you pay for just what you need. Available through<br />

38kV and 600A; and with automatic or manual transfer.<br />

SPEED CHANGING<br />

Powered by Safety ®<br />

A tough and rugged method of fundmental speed<br />

control for multi-speed MV motors. Remote controlled<br />

and automatic operated switching for ease of<br />

application and use. Suitable for use of motors rated to<br />

15kV.

---

Maximum<br />

<strong>Voltage</strong><br />

(kV)<br />

Frequency<br />

(Hz)<br />

Basic<br />

Impulse<br />

Level<br />

(kV)<br />

<strong>Powell</strong> Electrical Systems, <strong>Inc</strong>.<br />

8967 Pleasantwood Avenue NW<br />

North Canton, OH • 44720<br />

One<br />

Minute<br />

AC<br />

Withstand<br />

(kV)<br />

Fifteen<br />

Minute<br />

DC<br />

Withstand<br />

(kV)<br />

Loadbreak Oil Switch Electrical Ratings<br />

Corona<br />

Extinction<br />

(kV)<br />

Open<br />

Gap<br />

BIL<br />

Flashover<br />

Withstand<br />

(kV)<br />

Load<br />

Interrupting<br />

and<br />

Loop<br />

Switching<br />

Current<br />

(A)<br />

Transformer<br />

Magnetizing<br />

Interrupting<br />

Current<br />

(A)<br />

Powered by Safety ®<br />

©2007 <strong>Powell</strong> <strong>Industries</strong>, <strong>Inc</strong>. • All rights reserved.<br />

Capacitor<br />

or<br />

Cable<br />

Charging<br />

Interrupting<br />

Current<br />

(A)<br />

Asymmetrical<br />

Momentary<br />

and<br />

3 Operation<br />

Fault<br />

Close<br />

Current<br />

(kA)<br />

Optional<br />

Asymmetrical<br />

Momentary<br />

and<br />

3 Operation<br />

Fault<br />

Close<br />

Current<br />

(kA)<br />

Symmetrical<br />

One<br />

Second<br />

Current<br />

Rating<br />

(kA)<br />

15.5 50/60 95/110 35 53 11 200 600 25 40 40 64 25 600<br />

27 50/60 125 60 78 19 200 600 25 40 40 40 25 600<br />

38 50/60 150 70 103 26 200 600 25 40 40 40 25 600<br />

Maximum<br />

<strong>Voltage</strong><br />

(kV)<br />

Frequency<br />

(Hz)<br />

Basic<br />

Impulse<br />

Level<br />

(kV)<br />

One<br />

Minute<br />

AC<br />

Withstand<br />

(kV)<br />

Fifteen<br />

Minute<br />

DC<br />

Withstand<br />

(kV)<br />

Loadbreak SF 6 Gas Switch Electrical Ratings3<br />

Corona<br />

Extinction<br />

(kV)<br />

Open<br />

Gap<br />

BIL<br />

Flashover<br />

Withstand<br />

(kV)<br />

Load<br />

Interrupting<br />

and<br />

Loop<br />

Switching<br />

Current<br />

(A)<br />

Transformer<br />

Magnetizing<br />

Interrupting<br />

Current<br />

(A)<br />

Capacitor<br />

or<br />

Cable<br />

Charging<br />

Interrupting<br />

Current<br />

(A)<br />

Asymmetrical<br />

Momentary<br />

and<br />

3 Operation<br />

Fault<br />

Close<br />

Current<br />

(kA)<br />

Symmetrical<br />

10 Cycle<br />

Phase to<br />

Phase<br />

Simulated<br />

Internal Fault<br />

Withstand<br />

Current<br />

(kA)<br />

Symmetrical<br />

One<br />

Second<br />

Current<br />

Rating<br />

(kA)<br />

15.5 50/60 95/110 35 53 11 200 600 25 40 40 25 25 600<br />

27 50/60 125 60 78 19 200 600 25 40 40 25 25 600<br />

38 50/60 150 70 103 26 200 600 25 40 40 25 25 600<br />

Maximum<br />

<strong>Voltage</strong><br />

(kV)<br />

Maximum<br />

<strong>Voltage</strong><br />

(kV)<br />

5<br />

15<br />

27<br />

38<br />

Ambient<br />

Temperature<br />

Range<br />

(ºF)<br />

Mechanical<br />

Life<br />

(Operations)<br />

Loadbreak Switch Mechanical Ratings<br />

Oil Type SF 6 Type<br />

Corrosion<br />

Resistance per<br />

ASTM B-117<br />

(Hours)<br />

Maximum<br />

Leak<br />

Rate<br />

(cc/Second)<br />

Ambient<br />

Temperature<br />

Range<br />

(ºF)<br />

Mechanical<br />

Life<br />

(Operations)<br />

Corrosion<br />

Resistance per<br />

ASTM B-117<br />

(Hours)<br />

Maximum<br />

Leak<br />

Rate<br />

(cc/Second)<br />

Normal<br />

Gas Pressure<br />

@ 68 ºF<br />

(PSIG)<br />

15.5 -40 to +120 2000 2000 10 -5 -40 to +120 2000 2000 10 -6 6 15<br />

27 -40 to +120 2000 2000 10 -5 -40 to +120 2000 2000 10 -6 6 15<br />

38 -40 to +120 2000 2000 10 -5 -40 to +120 2000 2000 10 -6 6 15<br />

Maximum<br />

<strong>Voltage</strong><br />

(kV)<br />

Frequency<br />

(Hz)<br />

Speed Changer Switch Electrical and Mechanical Ratings<br />

Basic<br />

Impulse<br />

Level<br />

(kV)<br />

7.5 50/60 95/110<br />

15 50/60 95/110<br />

Transfer<br />

Type<br />

Interruption<br />

<strong>Medium</strong><br />

Continuous<br />

Current<br />

Rating<br />

(A)<br />

Asymmetrical<br />

Momentary Current<br />

Rating<br />

(kA)<br />

600 40/80<br />

1200 40/80<br />

600 40/80<br />

1200 40/80<br />

Ambient<br />

Temperature<br />

Range<br />

(ºF)<br />

Transfer Switch Electrical and Mechanical Ratings<br />

Insulation<br />

<strong>Medium</strong><br />

Frequency<br />

(Hz)<br />

Basic<br />

Impulse<br />

Level<br />

(kV)<br />

Continuous<br />

Current<br />

Rating<br />

(A)<br />

Mechanical<br />

Life<br />

(Operations)<br />

Corrosion<br />

Resistance per<br />

ASTM B-117<br />

(Hours)<br />

Continuous<br />

Current<br />

Rating<br />

(A)<br />

Continuous<br />

Current<br />

Rating<br />

(A)<br />

Maximum<br />

Design<br />

Gas<br />

Pressure<br />

(PSIG)<br />

Maximum<br />

Leak<br />

Rate<br />

(cc/Second)<br />

-40 to +120 2000 2000 10 -5<br />

-40 to +120 2000 2000 10 -5<br />

Loadbreak<br />

Current<br />

Rating<br />

(A)<br />

Asymmetrical<br />

Momentary<br />

Close and Latch<br />

Rating<br />

(kA)<br />

Transfer Time Maximum<br />

Leak<br />

Rate<br />

(cc/Second)<br />

Automatic/Manual SF 6 SF 6 50/60 75 600 600 40 12-15 Sec/ 8-10 Cycles 10 -6<br />

Automatic Oil Oil 50/60 75 600 600 40 12-15 Sec/ 8-10 Cycles 10 -5<br />

Automatic Vacuum SF 6 50/60 95/110 600 600 12 12-15 Sec/ 8-10 Cycles* 10 -6<br />

Automatic/Manual SF 6 SF 6 50/60 95/110 600 600 40 12-15 Sec/ 8-10 Cycles 10 -6<br />

Automatic Oil Oil 50/60 95/110 600 600 40/64 12-15 Sec/ 8-10 Cycles 10 -5<br />

Automatic Vacuum SF 6 50/60 125 600 600 12 12-15 Sec/ 8-10 Cycles* 10 -6<br />

Automatic/Manual SF 6 SF 6 50/60 125 600 600 40 12-15 Sec/ 8-10 Cycles 10 -6<br />

Automatic Oil Oil 50/60 125 600 600 40 12-15 Sec/ 8-10 Cycles 10 -5<br />

Automatic Vacuum SF 6 50/60 150 1250 600 31.5 12-15 Sec/ 8-10 Cycles 10 -6<br />

Automatic/Manual SF 6 SF 6 50/60 150 600 600 40 12-15 Sec/ 8-10 Cycles 10 -6<br />

Automatic Oil Oil 50/60 150 600 600 40 12-15 Sec/ 8-10 Cycles 10 -5<br />

* - Optional 25mSec transfer time available, please consult factory.<br />

Publication No. 09016<br />

08/2007 Rev 1<br />

Tel: 330.966.1750 • Fax: 330.966.1787<br />

www.powellind.com<br />

info@powellind.com